Potash Valley

At last, ANTLR v3 is available with C# bindings. I tested it and it works fine. Moreover, the new functionnalities allow simpler grammar definitions together with a more powerfull LL(*) algorithm.

For those who don't even know what ANTLR is:

ANother Tool for Language Recognition, (formerly PCCTS) is a language tool that provides a framework for constructing recognizers, compilers, and translators from grammatical descriptions containing Java, C#, C++, or Python actions.

With ANTLR you can define the grammar of any language, and get as a result a framework capable of analysing an entry in the language you described. For instance I use it to handle OPath expressions, and transform any OPath query in an object tree, easier then to handle than the original string.